Home » Public Forums » GMCnet » New GMC owner (exhaust question)
| New GMC owner [message #342470] |
Fri, 12 April 2019 07:46  |
tmsnyder
Messages: 151
Registered: January 2014
Karma: -9
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Senior Member |
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Hello! I just got my first GMC Motorhome! We (my family of five) have been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for 3 years now, turns out we love RV'ing. It was a great RV but the GMC has some advantages that I wanted experience first hand so I sold the HR and started looking for a GMC. There was one for sale in El Paso, TX that looked good to me for a lot of reasons, so I ended up getting it and driving it back to Buffalo, NY. I posted my experience on that 2000 mile trip here: http://www.classicwinnebagos.com/forum/index.php?topic=14874.0 Hopefully this doesn't violate any rules about sharing info from a competing website, but they aren't really competing, they are more focused on Winnebagos .
I'm going to have a lot a questions, but my first one is regarding the exhaust. Can I get a stock system from the manifolds back? Mine is totally gone except the down pipes but I think even they have been cut off at the ends.
Any other options? Do people put bigger pipes or dual exhaust on these?
Where did the stock system hang? After the Y pipe, did it hang underneath the passenger side frame rail? Where would I look for the pipe hanger attachment points?
Todd Snyder, Buffalo NY
1976 Eleganza II
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| Re: [GMCnet] New GMC owner [message #342474 is a reply to message #342470] |
Fri, 12 April 2019 08:02  |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Senior Member |
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Welcome to the asylum, Todd!
You’re asking at the right place, and there are folks in your area you will likely want to get to know.
I suggest you join GMCMI (http://www.gmcmi.com ) and keep asking here.
Stock system manifolds back - yes you can.
Headers are popular. I have a 3” mandrel bent system, and use Reflex gaskets
Dolph
DE AD0LF
Wheeling, West Virginia
1977 26’ ex-PalmBeach
Howell EFI & EBL, Reaction Arms, Manny Transmission
“The Aluminum and Fiberglass Mistress"
> On Apr 12, 2019, at 8:46 AM, Todd Snyder via Gmclist wrote:
>
> Hello! I just got my first GMC Motorhome! We (my family of five) have been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for 3 years
> now, turns out we love RV'ing. It was a great RV but the GMC has some advantages that I wanted experience first hand so I sold the HR and started
> looking for a GMC. There was one for sale in El Paso, TX that looked good to me for a lot of reasons, so I ended up getting it and driving it back to
> Buffalo, NY. I posted my experience on that 2000 mile trip here: http://www.classicwinnebagos.com/forum/index.php?topic=14874.0 Hopefully this
> doesn't violate any rules about sharing info from a competing website, but they aren't really competing, they are more focused on Winnebagos .
>
> I'm going to have a lot a questions, but my first one is regarding the exhaust. Can I get a stock system from the manifolds back? Mine is totally
> gone except the down pipes but I think even they have been cut off at the ends.
>
> Any other options? Do people put bigger pipes or dual exhaust on these?
>
> Where did the stock system hang? After the Y pipe, did it hang underneath the passenger side frame rail? Where would I look for the pipe hanger
> attachment points?
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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| Re: [GMCnet] New GMC owner [message #342475 is a reply to message #342470] |
Fri, 12 April 2019 08:16 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Todd,
Welcome to GMC-Land. And the best source of GMC technical support.
If your exhaust system ends as I understand it, at the header pipes, you
must have made a LOT of friends between El Paso and Buffalo -- and arrived
completely deaf.
The OEM exhaust system began with iron exhaust manifolds and continued
through 2-1/4" header pipes, dual mufflers and then into a Y-pipe which fed
a 2-1/2" tailpipe. That pipe went through round holes in the passenger
side of the frame crossmembers, with silicone isolators at those
locations. MANY GMC's have had the tailpipe replaced with 3" tubing (often
sacrificing the silicone isolators).
Probably your best option today is to contact Jim Kanomata (or
Can-o-'Maters)/ Jim K. at Applied GMC in Newark, CA (
jimk@appliedairfilters.com) for his complete exhaust systems, including all
stainless steel for maximum durability.
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
www.gmcwipersetc.com
On Fri, Apr 12, 2019 at 8:47 AM Todd Snyder via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Hello! I just got my first GMC Motorhome! We (my family of five) have
> been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for 3
> years
> now, turns out we love RV'ing. It was a great RV but the GMC has some
> advantages that I wanted experience first hand so I sold the HR and started
> looking for a GMC. There was one for sale in El Paso, TX that looked good
> to me for a lot of reasons, so I ended up getting it and driving it back to
> Buffalo, NY. I posted my experience on that 2000 mile trip here:
> http://www.classicwinnebagos.com/forum/index.php?topic=14874.0 Hopefully
> this
> doesn't violate any rules about sharing info from a competing website, but
> they aren't really competing, they are more focused on Winnebagos .
>
> I'm going to have a lot a questions, but my first one is regarding the
> exhaust. Can I get a stock system from the manifolds back? Mine is
> totally
> gone except the down pipes but I think even they have been cut off at the
> ends.
>
> Any other options? Do people put bigger pipes or dual exhaust on these?
>
> Where did the stock system hang? After the Y pipe, did it hang underneath
> the passenger side frame rail? Where would I look for the pipe hanger
> attachment points?
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] New GMC owner [message #342478 is a reply to message #342475] |
Fri, 12 April 2019 10:14 |
tmsnyder
Messages: 151
Registered: January 2014
Karma: -9
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Senior Member |
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Are there any photos showing the layout of the factory exhaust?
It goes through the holes in the frame crossmembers.... wow, I looked at those holes and wondered about that.
Do people ever put dual exhaust on these using driver's side holes in crossmembers? I'm thinking along the lines of two mufflers, an x-pipe, and dual exhaust. Or not worth the extra effort?
We didn't go deaf on our trip, the down pipes were attached to two different mufflers apparently re-purposed from a junk yard. Or maybe recovered off the side of the road. And one may have been a catalytic convertor. I'm not sure the source but they were obviously not original, and not well attached as we had to do a roadside repair on the drivers side. It tried to fall off on us.
I did look at Applied GMC catalog and online. The catalog came with my order for the jack hook and front wheel bearing greaser which I never used. The jack hook was amazing though, worth every penny. Anyway, the exhaust systems seem to start at the muffler, no downpipe or Y. Unless I get the header system but I don't care much for headers. It may be an issue where they have it but it's not listed online or in the catalog.
Todd Snyder, Buffalo NY
1976 Eleganza II
[Updated on: Fri, 12 April 2019 10:20] Report message to a moderator |
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| Re: [GMCnet] New GMC owner [message #342481 is a reply to message #342470] |
Fri, 12 April 2019 11:08 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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> On Apr 12, 2019, at 6:46 AM, Todd Snyder via Gmclist wrote:
>
> Hello! I just got my first GMC Motorhome! We (my family of five) have been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for 3 years
> now, turns out we love RV'ing. It was a great RV but the GMC has some advantages that I wanted experience first hand so I sold the HR and started
> looking for a GMC. There was one for sale in El Paso, TX that looked good to me for a lot of reasons, so I ended up getting it and driving it back to
> Buffalo, NY. I posted my experience on that 2000 mile trip here: http://www.classicwinnebagos.com/forum/index.php?topic=14874.0 Hopefully this
> doesn't violate any rules about sharing info from a competing website, but they aren't really competing, they are more focused on Winnebagos .
>
> I'm going to have a lot a questions, but my first one is regarding the exhaust. Can I get a stock system from the manifolds back? Mine is totally
> gone except the down pipes but I think even they have been cut off at the ends.
>
> Any other options? Do people put bigger pipes or dual exhaust on these?
>
> Where did the stock system hang? After the Y pipe, did it hang underneath the passenger side frame rail? Where would I look for the pipe hanger
> attachment points?
>
Todd
I have owned my GMC motorhome for 38 years now.
Some years back I theorized that if I moved the muffler to the rear it would leave the cockpit cooler and less sound.
I made my own Y pipe at the front which let to the passenger side to a 3” pipe and into the stock holes in the frame to the rear.
I used a single muffler at the rear which had deflectors and reflectors inside it rather than baffles. This was a Flowmaster with an inline 3” inlet and exit. Be sure to use a muffler heat shield over the muffler.
This has worked well for me and it did indeed reduce the heat and sound at the front.
Here is the information that I had posted to the GMCphotos.com site:
http://www.gmcmhphotos.com/photos/g3123-headers-2c-3-5c-26quot-3b-pipe-2c-inline-rear-muffler.html
You can build your own or much easier purchase a kit from Applied GMC. They even use stainless steel.
Jim Kanomata liked my design and asked me if he could duplicate it. He made some minor changes but it essentially is the same design. It is a popular kit and Jim has sold many of them over the last few years. appliedgmc.org
Emery Stora
77 Kingsley
Frederick, CO
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| Re: New GMC owner [message #342483 is a reply to message #342470] |
Fri, 12 April 2019 14:00 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Senior Member |
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Starting at the engine, you should see what shape the manifolds are in. I struggled with leaks for years, and went with buying headers, since my manifold faces on the engine were not really good. a year later, and a new engine, I am still using headers. You can decide if you want to go to headers, or keep manifolds. but make sure you have that taken care of, because the first thing to make noise is the manifolds to the head.
for exhaust You can buy a system from Applied, and maybe the other venders provide a kit? That is one option.
in MN, lots of rust problems and exhaust systems rot off easily, so we have many places that do Exhaust work. I took mine in, and they replaced the system from the header flange all the way back, for about $450. Many people like to go bigger in pipes, and I went a little bigger. people go with 3", but my exhaust guy said he tried and could not get the 3" to work in my 75 frame. I know there are some bushings and maybe it was tight, or maybe some bushings are not a full 3". I think there are different bushings out there. I did not argue, and I am running 2 3/4" pipes.
here is a photo of how the stock system is:
http://members.tripod.com/evmcc_48306/gmcmh4.jpg
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] New GMC owner [message #342484 is a reply to message #342483] |
Fri, 12 April 2019 18:36 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Just call me , I will gladly get you information and your not obligated to
purchase anything from me.
800-752-7502 as ask for me.
There will be other issues, and we are structured to sped time to answer
facts.
On Fri, Apr 12, 2019 at 12:02 PM Jon Roche via Gmclist <
gmclist@list.gmcnet.org> wrote:
>
> Starting at the engine, you should see what shape the manifolds are in.
> I struggled with leaks for years, and went with buying headers, since my
> manifold faces on the engine were not really good. a year later, and a
> new engine, I am still using headers. You can decide if you want to go to
> headers, or keep manifolds. but make sure you have that taken care of,
> because the first thing to make noise is the manifolds to the head.
>
> for exhaust You can buy a system from Applied, and maybe the other venders
> provide a kit? That is one option.
>
> in MN, lots of rust problems and exhaust systems rot off easily, so we
> have many places that do Exhaust work. I took mine in, and they replaced
> the
> system from the header flange all the way back, for about $450. Many
> people like to go bigger in pipes, and I went a little bigger. people go
> with 3", but my exhaust guy said he tried and could not get the 3" to
> work in my 75 frame. I know there are some bushings and maybe it was
> tight,
> or maybe some bushings are not a full 3". I think there are different
> bushings out there. I did not argue, and I am running 2 3/4" pipes.
>
> here is a photo of how the stock system is:
> http://members.tripod.com/evmcc_48306/gmcmh4.jpg
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] New GMC owner [message #342488 is a reply to message #342475] |
Sat, 13 April 2019 02:14 |
Rollerg
Messages: 111
Registered: November 2014
Location: Marysville, MI
Karma: 0
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Senior Member |
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I put on Jim K’s stainless exhaust system with headers and am very satisfy.
Gary Coaster / Reno, NV
1977 GMC Eleganza ll
GMC RV Day Night Shade Sales
GMCShades@gmail.com
www.GMCMotorhomemarketplace.com/GMC_Shades/
> On Apr 13, 2019, at 1:16 AM, Ken Henderson via Gmclist wrote:
>
> Todd,
>
> Welcome to GMC-Land. And the best source of GMC technical support.
>
> If your exhaust system ends as I understand it, at the header pipes, you
> must have made a LOT of friends between El Paso and Buffalo -- and arrived
> completely deaf.
>
> The OEM exhaust system began with iron exhaust manifolds and continued
> through 2-1/4" header pipes, dual mufflers and then into a Y-pipe which fed
> a 2-1/2" tailpipe. That pipe went through round holes in the passenger
> side of the frame crossmembers, with silicone isolators at those
> locations. MANY GMC's have had the tailpipe replaced with 3" tubing (often
> sacrificing the silicone isolators).
>
> Probably your best option today is to contact Jim Kanomata (or
> Can-o-'Maters)/ Jim K. at Applied GMC in Newark, CA (
> jimk@appliedairfilters.com) for his complete exhaust systems, including all
> stainless steel for maximum durability.
>
> Ken H.
> Americus, GA
> '76 X-Birchaven w/Cad500/Howell EFI & EBL,
> Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
> www.gmcwipersetc.com
>
>
> On Fri, Apr 12, 2019 at 8:47 AM Todd Snyder via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Hello! I just got my first GMC Motorhome! We (my family of five) have
>> been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for 3
>> years
>> now, turns out we love RV'ing. It was a great RV but the GMC has some
>> advantages that I wanted experience first hand so I sold the HR and started
>> looking for a GMC. There was one for sale in El Paso, TX that looked good
>> to me for a lot of reasons, so I ended up getting it and driving it back to
>> Buffalo, NY. I posted my experience on that 2000 mile trip here:
>> http://www.classicwinnebagos.com/forum/index.php?topic=14874.0 Hopefully
>> this
>> doesn't violate any rules about sharing info from a competing website, but
>> they aren't really competing, they are more focused on Winnebagos .
>>
>> I'm going to have a lot a questions, but my first one is regarding the
>> exhaust. Can I get a stock system from the manifolds back? Mine is
>> totally
>> gone except the down pipes but I think even they have been cut off at the
>> ends.
>>
>> Any other options? Do people put bigger pipes or dual exhaust on these?
>>
>> Where did the stock system hang? After the Y pipe, did it hang underneath
>> the passenger side frame rail? Where would I look for the pipe hanger
>> attachment points?
>>
>>
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
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Unsubscribe or Change List Options:
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| Re: [GMCnet] New GMC owner [message #342511 is a reply to message #342488] |
Sun, 14 April 2019 13:41 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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3" slides in, only an idiot would not be able to do so.
Call me should you need explanation or help as I do spend majority of my
time assisting people.
The reason why exhaust people will tell you it can't be done is because
they do not have the tooling for 3" and know the bends will be kinked.
On Sat, Apr 13, 2019 at 12:15 AM Gary via Gmclist
wrote:
> I put on Jim K’s stainless exhaust system with headers and am very satisfy.
>
> Gary Coaster / Reno, NV
> 1977 GMC Eleganza ll
> GMC RV Day Night Shade Sales
> GMCShades@gmail.com
> www.GMCMotorhomemarketplace.com/GMC_Shades/
>
>> On Apr 13, 2019, at 1:16 AM, Ken Henderson via Gmclist gmclist@list.gmcnet.org> wrote:
>>
>> Todd,
>>
>> Welcome to GMC-Land. And the best source of GMC technical support.
>>
>> If your exhaust system ends as I understand it, at the header pipes, you
>> must have made a LOT of friends between El Paso and Buffalo -- and
> arrived
>> completely deaf.
>>
>> The OEM exhaust system began with iron exhaust manifolds and continued
>> through 2-1/4" header pipes, dual mufflers and then into a Y-pipe which
> fed
>> a 2-1/2" tailpipe. That pipe went through round holes in the passenger
>> side of the frame crossmembers, with silicone isolators at those
>> locations. MANY GMC's have had the tailpipe replaced with 3" tubing
> (often
>> sacrificing the silicone isolators).
>>
>> Probably your best option today is to contact Jim Kanomata (or
>> Can-o-'Maters)/ Jim K. at Applied GMC in Newark, CA (
>> jimk@appliedairfilters.com) for his complete exhaust systems, including
> all
>> stainless steel for maximum durability.
>>
>> Ken H.
>> Americus, GA
>> '76 X-Birchaven w/Cad500/Howell EFI & EBL,
>> Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
>> www.gmcwipersetc.com
>>
>>
>> On Fri, Apr 12, 2019 at 8:47 AM Todd Snyder via Gmclist > gmclist@list.gmcnet.org> wrote:
>>
>>> Hello! I just got my first GMC Motorhome! We (my family of five) have
>>> been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for 3
>>> years
>>> now, turns out we love RV'ing. It was a great RV but the GMC has some
>>> advantages that I wanted experience first hand so I sold the HR and
> started
>>> looking for a GMC. There was one for sale in El Paso, TX that looked
> good
>>> to me for a lot of reasons, so I ended up getting it and driving it
> back to
>>> Buffalo, NY. I posted my experience on that 2000 mile trip here:
>>> http://www.classicwinnebagos.com/forum/index.php?topic=14874.0
> Hopefully
>>> this
>>> doesn't violate any rules about sharing info from a competing website,
> but
>>> they aren't really competing, they are more focused on Winnebagos .
>>>
>>> I'm going to have a lot a questions, but my first one is regarding the
>>> exhaust. Can I get a stock system from the manifolds back? Mine is
>>> totally
>>> gone except the down pipes but I think even they have been cut off at
> the
>>> ends.
>>>
>>> Any other options? Do people put bigger pipes or dual exhaust on these?
>>>
>>> Where did the stock system hang? After the Y pipe, did it hang
> underneath
>>> the passenger side frame rail? Where would I look for the pipe hanger
>>> attachment points?
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] New GMC owner [message #342519 is a reply to message #342511] |
Sun, 14 April 2019 23:10 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Gees Jim, why don’t u drop the sugar coating an tell us what u really think?
Sully
Bellevue wa
On Sun, Apr 14, 2019 at 11:42 AM Jim Kanomata via Gmclist <
gmclist@list.gmcnet.org> wrote:
> 3" slides in, only an idiot would not be able to do so.
> Call me should you need explanation or help as I do spend majority of my
> time assisting people.
> The reason why exhaust people will tell you it can't be done is because
> they do not have the tooling for 3" and know the bends will be kinked.
>
> On Sat, Apr 13, 2019 at 12:15 AM Gary via Gmclist >
> wrote:
>
>> I put on Jim K’s stainless exhaust system with headers and am very
> satisfy.
>>
>> Gary Coaster / Reno, NV
>> 1977 GMC Eleganza ll
>> GMC RV Day Night Shade Sales
>> GMCShades@gmail.com
>> www.GMCMotorhomemarketplace.com/GMC_Shades/
>>
>>> On Apr 13, 2019, at 1:16 AM, Ken Henderson via Gmclist > gmclist@list.gmcnet.org> wrote:
>>>
>>> Todd,
>>>
>>> Welcome to GMC-Land. And the best source of GMC technical support.
>>>
>>> If your exhaust system ends as I understand it, at the header pipes,
> you
>>> must have made a LOT of friends between El Paso and Buffalo -- and
>> arrived
>>> completely deaf.
>>>
>>> The OEM exhaust system began with iron exhaust manifolds and continued
>>> through 2-1/4" header pipes, dual mufflers and then into a Y-pipe which
>> fed
>>> a 2-1/2" tailpipe. That pipe went through round holes in the passenger
>>> side of the frame crossmembers, with silicone isolators at those
>>> locations. MANY GMC's have had the tailpipe replaced with 3" tubing
>> (often
>>> sacrificing the silicone isolators).
>>>
>>> Probably your best option today is to contact Jim Kanomata (or
>>> Can-o-'Maters)/ Jim K. at Applied GMC in Newark, CA (
>>> jimk@appliedairfilters.com) for his complete exhaust systems,
> including
>> all
>>> stainless steel for maximum durability.
>>>
>>> Ken H.
>>> Americus, GA
>>> '76 X-Birchaven w/Cad500/Howell EFI & EBL,
>>> Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
>>> www.gmcwipersetc.com
>>>
>>>
>>> On Fri, Apr 12, 2019 at 8:47 AM Todd Snyder via Gmclist >> gmclist@list.gmcnet.org> wrote:
>>>
>>>> Hello! I just got my first GMC Motorhome! We (my family of five)
> have
>>>> been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for
> 3
>>>> years
>>>> now, turns out we love RV'ing. It was a great RV but the GMC has some
>>>> advantages that I wanted experience first hand so I sold the HR and
>> started
>>>> looking for a GMC. There was one for sale in El Paso, TX that looked
>> good
>>>> to me for a lot of reasons, so I ended up getting it and driving it
>> back to
>>>> Buffalo, NY. I posted my experience on that 2000 mile trip here:
>>>> http://www.classicwinnebagos.com/forum/index.php?topic=14874.0
>> Hopefully
>>>> this
>>>> doesn't violate any rules about sharing info from a competing website,
>> but
>>>> they aren't really competing, they are more focused on Winnebagos .
>>>>
>>>> I'm going to have a lot a questions, but my first one is regarding the
>>>> exhaust. Can I get a stock system from the manifolds back? Mine is
>>>> totally
>>>> gone except the down pipes but I think even they have been cut off at
>> the
>>>> ends.
>>>>
>>>> Any other options? Do people put bigger pipes or dual exhaust on
> these?
>>>>
>>>> Where did the stock system hang? After the Y pipe, did it hang
>> underneath
>>>> the passenger side frame rail? Where would I look for the pipe hanger
>>>> attachment points?
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] New GMC owner [message #342531 is a reply to message #342519] |
Mon, 15 April 2019 13:39 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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I put 3" in my 75 Transmode coach in the driveway, the main tube slide right in, the Y required a little welding but there is probably a No Weld way to make it work too.
________________________________
From: Gmclist on behalf of Todd Sullivan via Gmclist
Sent: Sunday, April 14, 2019 11:10 PM
To: gmclist@list.gmcnet.org
Cc: Todd Sullivan
Subject: Re: [GMCnet] New GMC owner
Gees Jim, why don’t u drop the sugar coating an tell us what u really think?
Sully
Bellevue wa
On Sun, Apr 14, 2019 at 11:42 AM Jim Kanomata via Gmclist <
gmclist@list.gmcnet.org> wrote:
> 3" slides in, only an idiot would not be able to do so.
> Call me should you need explanation or help as I do spend majority of my
> time assisting people.
> The reason why exhaust people will tell you it can't be done is because
> they do not have the tooling for 3" and know the bends will be kinked.
>
> On Sat, Apr 13, 2019 at 12:15 AM Gary via Gmclist >
> wrote:
>
>> I put on Jim K’s stainless exhaust system with headers and am very
> satisfy.
>>
>> Gary Coaster / Reno, NV
>> 1977 GMC Eleganza ll
>> GMC RV Day Night Shade Sales
>> GMCShades@gmail.com
>> www.GMCMotorhomemarketplace.com/GMC_Shades/
>>
>>> On Apr 13, 2019, at 1:16 AM, Ken Henderson via Gmclist > gmclist@list.gmcnet.org> wrote:
>>>
>>> Todd,
>>>
>>> Welcome to GMC-Land. And the best source of GMC technical support.
>>>
>>> If your exhaust system ends as I understand it, at the header pipes,
> you
>>> must have made a LOT of friends between El Paso and Buffalo -- and
>> arrived
>>> completely deaf.
>>>
>>> The OEM exhaust system began with iron exhaust manifolds and continued
>>> through 2-1/4" header pipes, dual mufflers and then into a Y-pipe which
>> fed
>>> a 2-1/2" tailpipe. That pipe went through round holes in the passenger
>>> side of the frame crossmembers, with silicone isolators at those
>>> locations. MANY GMC's have had the tailpipe replaced with 3" tubing
>> (often
>>> sacrificing the silicone isolators).
>>>
>>> Probably your best option today is to contact Jim Kanomata (or
>>> Can-o-'Maters)/ Jim K. at Applied GMC in Newark, CA (
>>> jimk@appliedairfilters.com) for his complete exhaust systems,
> including
>> all
>>> stainless steel for maximum durability.
>>>
>>> Ken H.
>>> Americus, GA
>>> '76 X-Birchaven w/Cad500/Howell EFI & EBL,
>>> Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
>>> www.gmcwipersetc.com
>>>
>>>
>>> On Fri, Apr 12, 2019 at 8:47 AM Todd Snyder via Gmclist >> gmclist@list.gmcnet.org> wrote:
>>>
>>>> Hello! I just got my first GMC Motorhome! We (my family of five)
> have
>>>> been traveling and camping in a 31' Holiday Rambler Aluma-Lite XL for
> 3
>>>> years
>>>> now, turns out we love RV'ing. It was a great RV but the GMC has some
>>>> advantages that I wanted experience first hand so I sold the HR and
>> started
>>>> looking for a GMC. There was one for sale in El Paso, TX that looked
>> good
>>>> to me for a lot of reasons, so I ended up getting it and driving it
>> back to
>>>> Buffalo, NY. I posted my experience on that 2000 mile trip here:
>>>> http://www.classicwinnebagos.com/forum/index.php?topic=14874.0
>> Hopefully
>>>> this
>>>> doesn't violate any rules about sharing info from a competing website,
>> but
>>>> they aren't really competing, they are more focused on Winnebagos .
>>>>
>>>> I'm going to have a lot a questions, but my first one is regarding the
>>>> exhaust. Can I get a stock system from the manifolds back? Mine is
>>>> totally
>>>> gone except the down pipes but I think even they have been cut off at
>> the
>>>> ends.
>>>>
>>>> Any other options? Do people put bigger pipes or dual exhaust on
> these?
>>>>
>>>> Where did the stock system hang? After the Y pipe, did it hang
>> underneath
>>>> the passenger side frame rail? Where would I look for the pipe hanger
>>>> attachment points?
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] New GMC owner [message #342537 is a reply to message #342511] |
Mon, 15 April 2019 19:03 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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jimk wrote on Sun, 14 April 2019 13:41
3" slides in, only an idiot would not be able to do so.
Call me should you need explanation or help as I do spend majority of my
time assisting people.
The reason why exhaust people will tell you it can't be done is because
they do not have the tooling for 3" and know the bends will be kinked.
JimK
Jim - I installed your 3 inch system on a 26 ft 1973 coach - some of the early coach frames were less gauge and tend to sag. I had to grind a few of the cross member holes to ensure adequate clearance so the long pipe would "slide right in".
It's a nice system - but like almost any change we make to our coaches we should/can expect some adjustment may be required.
My opinion ---
Dennis
Dennis S
73 Painted Desert 230
Memphis TN Metro
[Updated on: Mon, 15 April 2019 19:05] Report message to a moderator |
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| Re: [GMCnet] New GMC owner [message #342538 is a reply to message #342537] |
Mon, 15 April 2019 19:14 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Correction/addendum - seems we have two new owners, one with a 73, one a 76 --
Dennis S wrote on Mon, 15 April 2019 19:03jimk wrote on Sun, 14 April 2019 13:41
3" slides in, only an idiot would not be able to do so.
Call me should you need explanation or help as I do spend majority of my
time assisting people.
The reason why exhaust people will tell you it can't be done is because
they do not have the tooling for 3" and know the bends will be kinked.
JimK
Jim - I installed your 3 inch system on a 26 ft 1973 coach - some of the early coach frames were less gauge and tend to sag. I had to grind a few of the cross member holes to ensure adequate clearance so the long pipe would "slide right in".
It's a nice system - but like almost any change we make to our coaches we should/can expect some adjustment may be required.
My opinion ---
Dennis
Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: New GMC owner [message #342544 is a reply to message #342470] |
Tue, 16 April 2019 07:34 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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The headers are the cure for bad manifolds, one side of which is made of unobtanium. Look at Applied's exhaust system, or roll your own, if you can find a shop which can bend 3 inch tubing properly. What's your time worth?
FWIW, two pf my coaches already had Thorley headers when I got them the third had leaking (cracked) stock manifolds and thus was a candidate for a set of headers. I swapped it before that change was made. If nothing else, the headers are lighter weight and thus easier to get on the engine.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
[Updated on: Tue, 16 April 2019 07:35] Report message to a moderator |
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| Re: New GMC owner [message #342545 is a reply to message #342470] |
Tue, 16 April 2019 07:37 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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I'll note, my current coach is fitted with a dual inlet single muffler, which precludes the Y pipe but requires some fabrication between the header flanges and the muffler input. It was there when I got the coach, so far it has worked well but a bit noisy.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: New GMC owner [message #342557 is a reply to message #342470] |
Tue, 16 April 2019 11:35 |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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Todd,
You have been here a while and now have a coach of your own.
You and everybody that reads here is welcome, but now you are a real part of the family, cult and asylum.
If you read here often, you may have noticed that I was very late getting to you. That is because our coach broke about a thousand miles from home. The ONLY reason we were able to recover and get the coach home for the final repairs is the strength of this community. This is a second time for me on this end and I can't tell you how many I have helped (because I don't actually care). We help each other like this.
You seem to have been reading here a while, and I hope that you have gathered that your coach is more than just a new big toy. It connects you to a community that is most amazing. Because of the support that the community provides, it will be a help to both you and the community if you were to fill in a sigfile. To do this, go to <Control Panel/Account Settings> and scroll down. You will find it there. Put in your real name (we like to know who we are helping), a short about the coach including the major mod, and finally a geographic reference so that those that may chose to will know if they are in striking range. By using this feature of the forum, that sigfile will be attached to everything you post.
I don't know if you read FaceBook, there is a large GMC following there. There are three or five different groups and some of the chapters have pages. The problem is that some that give advice there are not all that familiar with the TZE and I have seen cases where bad advice was followed. I chose to say no more here.
Want a real experience?
The fall International Convention will be in Mansfield OH. That is just over 250 miles from Buffalo. Not even a full tank. If you can get there for any portion of the run, just do it. You will learn more standing in one place and listening to the chatter than you will be able to gather in a year doing anything else. I am going to repeat (again) what I was told be one of the new owners that I got to GMCMI. "It was like trying to get a sip of water from a fire hose."
You will get to meet several hundred brand new old friends and at least a few of the vendors that can supply those things that you will need to keep the old girl alive and well.
If you don't have a maintenance log, start one today. By fall, this will all be a blur. "Did I really buy those batteries 11 years ago?"
Also, on a single page (on a computer) start a five part list:
* Needed now (that are not routine maintenance items)
* Jobs that can be planned for the off season
* Waiting - things you want to do when you have the time and parts
* Abandon - Thing you thought about but now not so sure
* Done - This is the best part. Move things here with a date and this list will keep growing and also serve as a record and reminder along with the maintenance log.
Do you own a good grease gun? If not, go buy one. This is a whole other discussion, but grease - even the Valvoline Syn-power is still cheaper than parts.
All this be said, be sure to recognize that you are part of a group of helping and supportive people. The only other community that I know of that is like this is that of the watermen that are my world. For that very reason, I like to welcome new owners here much as a new owner or vessel is welcomed there. So,
May the Good Lord bless this coach and all those that set forth within her.
Welcome Todd and Family.
Matt - at home and planning the complete repair of Chaumière
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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